WO2023036476A1 - Brüheinheit mit verbesserter abdichtung der brühkammer und verfahren zum betrieb einer solchen brüheinheit - Google Patents
Brüheinheit mit verbesserter abdichtung der brühkammer und verfahren zum betrieb einer solchen brüheinheit Download PDFInfo
- Publication number
- WO2023036476A1 WO2023036476A1 PCT/EP2022/062528 EP2022062528W WO2023036476A1 WO 2023036476 A1 WO2023036476 A1 WO 2023036476A1 EP 2022062528 W EP2022062528 W EP 2022062528W WO 2023036476 A1 WO2023036476 A1 WO 2023036476A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brewing
- brewing chamber
- fluid
- infusion
- halves
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 19
- 238000001802 infusion Methods 0.000 claims abstract description 84
- 239000012530 fluid Substances 0.000 claims abstract description 83
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 20
- 235000013361 beverage Nutrition 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 93
- 238000013124 brewing process Methods 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 5
- 239000000565 sealant Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
- A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
- A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/4403—Constructional details
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
- A47J31/469—Details of hydraulic circuits
Definitions
- the present invention relates to a brewing unit for a beverage preparation device for substrate portions, in particular for a coffee machine for pre-portioned coffee units according to the preamble of claim 1.
- the present invention also relates to a beverage preparation device with such a brewing unit and a method for operating a brewing unit for a beverage preparation device for substrate portions, in particular for a coffee machine for pre-portioned coffee units according to the preamble of claim 14.
- a beverage is prepared, in particular brewed, with a corresponding brewing unit from a substrate portion, in particular a pre-portioned coffee unit, for example in the form of a solid capsule covered with a jacket material and/or is leached out.
- the substrate portion is generally introduced or transferred into a closable brewing chamber and before the start of the actual brewing process is enclosed tightly, in particular pressure-tight and fluid-tight, by said brewing chamber.
- a pressurized brewing fluid preferably hot water, for example, can penetrate into the opened substrate portion, brew and/or brew the beverage substrate stored there, in particular ground coffee or coffee powder leach:
- the resulting beverage can then be dispensed through an outlet port.
- the pressure or overpressure during brewing plays a significant role in the brewing process, especially in the case of a coffee brewing process, it is necessary for the said brewing chambers of the brewing units not only to be securely and reliably closed and sealed, but also for several thousand or several tens of thousands of brewing cycles can be tightly closed again and again and, moreover, especially during the brewing process, ie while the brewing chamber is filled with the pressurized brewing fluid is applied and accordingly in the brewing chamber itself a corresponding brewing pressure or overpressure is built up, the tightness of the brewing chamber is maintained or ensured. All of this must be guaranteed, although the built-in parts of the brewing unit are all subject to a certain unavoidable manufacturing tolerance, which can increase or add up depending on the combination of individual components.
- the known locking and locking concepts generally provide that movable or movable parts of the brewing chamber, for example brewing chamber halves that can be moved relative to one another, are subjected to a force towards one another and are kept in a corresponding state of tension or pressure, so that, for example, under the corresponding utilization by sealing means, for example sealing rings, the excess pressure or brewing pressure prevailing inside the brewing chamber during the brewing process is overcompensated to the extent that the brewing pressure is just not able to move the moving or moveable parts of the brewing chamber and in particular to open the brewing chamber or to open it lead to leakage.
- sealing means for example sealing rings
- the present invention has set itself the task of proposing a brewing unit and a method for operating a brewing unit that overcome the disadvantages of the prior art and, in particular, provide a brewing unit and a method in which the brewing chamber can be opened easily and without any particular effort can be closed and at the same time, in particular permanently or in the long term, a secure and reliable sealing of the brewing chamber is achieved, preferably largely independent of manufacturing tolerances of the components involved.
- This object is achieved with a brewing unit having the features of claim 1. Furthermore, this object is achieved with the features of independent method claim 14 .
- a brewing unit for a beverage preparation device for substrate portions, in particular for a coffee machine for pre-portioned coffee units, which comprises a carrier chamber and a brewing chamber, the brewing chamber having at least two brewing chamber halves that can be moved relative to one another in a first direction, and drive means for transferring the brewing chamber halves between an open, spaced-apart opening position and a closed closed position bringing the brewing chamber halves to bear against one another at contact surfaces, in particular by a movement of one brewing chamber half relative to the carrier.
- At least one brewing chamber half comprises a hydraulic sealing cylinder, which applies force to the contact surfaces of the brewing chamber halves to support the sealing effect of the brewing chamber halves in the closed position towards one another, the sealing cylinder being fluid-conducting between a brewing fluid inflow of the brewing chamber half and one preferably movably mounted in the brewing chamber half , Infusion assembly is arranged.
- the invention is thus based on a basic concept that makes use of the brewing fluid that is available or made available under pressure anyway, before and during a brewing process, and thus specifically at the time or in the period of time in which also within the brewing chamber a pressure or excess pressure is built up until finally the brewing pressure is reached, to apply an additional force to the contact surfaces of the brewing chamber halves, which is directed in such a way that it applies force to the brewing chamber halves and the contact surfaces towards one another and thus supports or promotes the closed position or sealing position of the brewing chamber halves .
- a very special achievement of the invention lies in recognizing that for this purpose of temporary, targeted support or improvement of the closed position, the brewing fluid that is produced or available anyway can be used and thus the brewing fluid not only causes or effects the pressure in the closed brewing chamber , but at the same time and / or slightly offset in time also builds up the corresponding back pressure and maintained to support the closed position of the brewing chamber halves and thus ensure the tightness of the closed brewing chamber.
- mechanical locking means are assigned to at least one movably designed brewing chamber half in such a way that the brewing chamber halves are mechanically fixed in their relative arrangement to one another when the closed position is reached. Contrary to a possibly intuitive thought, the locking means are not a contradiction but an excellent addition to the basic concept according to the invention.
- the locking means can also be designed in such a way that they provide or enable the closed position just like that or only with a small or minimal pressing force or contact force of the contact surfaces or brewing chamber halves on one another.
- the sealing cylinder positively influences the sealing effect or the contact pressure of the brewing chamber halves against one another at the right or necessary moment or in the right time period, but does not have to provide the basic closure or the basic fixing of the brewing chamber halves in the closed position.
- the brewing fluid flowing into a brewing fluid inflow of the brewing chamber half with the sealing cylinder first provides a corresponding overpressure in the sealing cylinder to improve the sealing effect or the contact pressure of the brewing chamber halves against one another, before the same or the same brewing fluid, or at least part of it , flows into the brewing chamber or is transferred into the brewing chamber.
- the sealing cylinder is formed between an outer housing and an inner housing of the brewing chamber half which is movably mounted relative to the outer housing.
- This is advantageous haft manner allows a space-saving arrangement.
- the sealing cylinder is also moved or adjusted together with the entire brewing chamber half with the preferably mechanical drive means, so that the sealing cylinder as a whole only has to exert an extremely small or almost negligible stroke, which only takes into account the manufacturing tolerances and/or the to compensate for component wear.
- “between” should be understood to mean that parts of the inner housing and the outer housing provide essential structures for forming the sealing cylinder.
- the outer housing with the preferably mechanical drive means is movably mounted relative to the carrier and/or the other half of the brewing chamber. Furthermore, it can be provided that the outer housing is fixed or can be fixed in relation to the carrier with the mechanical locking means that may be provided.
- the sealing cylinder does not act or serve as a hydraulic working cylinder that covers a significant path or stroke or a significant distance, but rather a minimal or negligible stroke in the form of tolerance and wear compensation and is mainly used instead to transmit or exert a force.
- This also has the advantage that only a minimum amount of residual water or additional residual water occurs through the sealing cylinder as part of a scalding operation or scalding process.
- the inner housing of the brewing chamber half forms a contact surface for contacting and sealing contact with the other brewing chamber half, in particular on a contact surface of the other brewing chamber half. It can thus be advantageously ensured that the sealing cylinder, particularly if it is formed or formed between the inner housing and the outer housing, transmits the force directly and immediately to the contact surface as a result of an overpressure prevailing inside the sealing cylinder can and thus can improve the sealing effect or contact pressure of the brewing chamber halves together.
- a further, particularly advantageous embodiment of the brewing unit according to the invention provides that the brewing chamber halves, the preferably mechanical drive means, the inner housing and the outer housing are coordinated with one another, in particular arranged and dimensioned with respect to one another such that the contact surfaces of the brewing chamber halves during a mechanical transfer of the brewing chamber halves into the closed position, in particular when fixing via locking means, a low contact pressure force of the contact surfaces against each other is achieved and when the hydraulic sealing cylinder is acted upon, the contact pressure force of the contact surfaces against each other is increased.
- manual actuation means such as a manually operated lever or the like
- the infusion assembly comprises infusion means for penetrating a substrate portion, in particular a pre-portioned coffee unit, and introducing brewing fluid into the substrate portion or coffee unit, which can be moved between a withdrawn position and a brewing position relative to the brewing chamber half, are in particular movably mounted relative to an inner housing of the brewing chamber half.
- the piercing and infusion mechanism of the brewing chamber or the brewing unit can advantageously also be provided in the brewing chamber half that provides the supporting pressing and sealing effect on the contact surfaces of the brewing chamber halves.
- the infusion means are connected to the sealing cylinder in a fluid-conducting manner, with a hydraulic cylinder preferably being arranged in a fluid-conducting manner between the sealing cylinder and the infusion means, the working piston of which is connected to the infusion means in such a way that the hydraulic cylinder can be filled with Fluid, in particular brewing fluid, leads to a movement of the infusion means in the direction of the brewing position.
- the infusion means are basically fluidly connected to the sealing cylinder, it can be ensured that the brewing fluid flows from a brewing fluid inflow of the brewing chamber half via the sealing cylinder to or into the infusion assembly and there into the infusion means, so that advantageously exactly one fluid line or liquid path starts in said brewing chamber half from the brewing fluid inflow to the infusion devices.
- the brewing chamber, the brewing unit and, overall, the beverage preparation device can be designed in a particularly simple and compact manner.
- the infusion means can also be driven or moved via a hydraulic cylinder, with the hydraulic cylinder preferably also being incorporated or integrated into exactly one fluid flow up to the infusion means, so that brewing fluid is then, for example, initially supplied to the brewing chamber half via a brewing fluid inflow , then first flows into the sealing cylinder or, if necessary, simultaneously or partially with a time delay also into the hydraulic cylinder, in which case it can further advantageously be provided that that there is again a fluid-conducting connection between the hydraulic cylinder and the infusion means or that fluid-conducting means are provided, so that the brewing fluid can be conducted further or forwarded at least from the working cylinder and/or from the sealing cylinder into the infusion means of the infusion assembly in order to be supplied from there to a substrate portion can.
- the fundamentally advantageous utilization of the brewing fluid that is available and, in particular, that is available under pressure is further advantageously utilized in that the brewing fluid, in addition to a pressing force or sealing effect on the brewing chamber halves as a hydraulic working medium within the hydraulic cylinder, also enables the movement or adjustment of the Infusion agent of the infusion assembly, at least in one direction, causes or effects.
- this movement or adjustment of the infusion means in particular from a retracted position to a brewing position, takes place or should take place precisely in the period in which brewing fluid is being introduced at overpressure into the brewing unit, in particular into the brewing chamber half, or is being fed to the brewing chamber half .
- an automatic or self-controlled valve in particular a counter-pressure valve, is arranged downstream of the sealing cylinder and/or hydraulic cylinder in a fluid-conducting manner such that when a brewing pressure is reached in the hydraulic cylinder and/or sealing cylinder, a fluid connection is established between the Hydraulic cylinder and / or sealing cylinder and the infusion assembly is released.
- the counter-pressure valve can comprise a valve body, which is subjected to a force on a valve seat with prestressing means, preferably with a spring. Valve body and valve seat can particularly preferably interact in the form of a needle valve.
- the fluid connection to the sealing cylinder and/or hydraulic cylinder can then be established in such a way that the fluid has to lift the valve body off the valve seat against the bias of the biasing means in order to open the valve.
- the overpressure at which the back pressure valve opens is determined by the prestressing means and the geometries of the valve body and the valve seat.
- the valve can automatically control the pressure in the sealing cylinder in an embodiment without a hydraulic cylinder and with a sealing cylinder.
- the valve can also control the pressure conditions in both cylinders and the propulsion in the hydraulic cylinder.
- the automatic or self-controlled valve is provided at the transition between the infusion means and the hydraulic cylinder and is arranged such that a fluid connection between the hydraulic cylinder and the infusion means is released when a brewing pressure is reached in the hydraulic cylinder.
- a largely automatic control of the processes within the brewing chamber half or the brewing chamber can be achieved simply by making the brewing fluid available at a certain delivery pressure or overpressure, with the volumes and areas otherwise being set or determined in such a way that, on the one hand, before the valve opens automatically sufficient contact pressure or a sufficient contact force is exerted on the contact surfaces of the halves of the brewing chamber and/or the pressure in the hydraulic cylinder has ensured that the infusion means have performed a hydraulic stroke, preferably against the restoring force of restoring means, in particular spring means, which is at least sufficient to to introduce the infusants into the substrate portion.
- the infusion means can be assigned deformation means set back in such a way that when the infusion means move from the retracted position into the brewing position, the deformation means bring about a deformation of the surface or a part of the surface of the substrate portion after or after the or while the infusants penetrate into the substrate portion.
- a possibly desirable, sensible or necessary deformation of the substrate portion can thus also be brought about directly or indirectly by the provision of the brewing fluid.
- Provision can particularly preferably be made for the shape and the movement of the deformation means to be matched to the substrate portion in such a way that the substrate portion is broken open when the infusion means are moved into the brewing position.
- a crack structure or other similar perforations can preferably be introduced into a part of a shell or a surface material of the substrate portion.
- the deformation means can also be used for tamping the beverage substrate, so that when the infusion means are transferred into the brewing position, the deformation means exert a tamper pressure or a tamper force on the substrate portion.
- the inner housing of the brewing chamber half has a rear section with a first, smaller diameter for forming the cylinder of the hydraulic cylinder and a front section with a larger diameter for accommodating the infusion assembly.
- the rear section with the smaller diameter has a widening or widening arranged on the outside or outside of the inner housing, which extends, for example radially, in the direction of the outer housing, preferably between the inner housing, the widening or widening of the inner housing and the outer case to form the sealing cylinder.
- the required larger diameter of the inner housing allows the arrangement of a sufficiently large and stable infusion assembly, preferably including corresponding restoring means, in particular spring means, for returning the infusion means to the retracted position after the brewing process is complete.
- the diameter or the hydraulically effective area of the sealing cylinder is larger than the diameter or the hydraulically effective area of the hydraulic cylinder. This advantageously takes into account the fact that the hydraulic cylinder is intended to realize a stroke via the working piston, whereas The purpose of the sealing cylinder gene is to generate and transmit a force with a relatively small or hardly noticeable stroke.
- the above-mentioned object is also achieved by a beverage preparation device with a brewing unit according to one of the embodiments described above.
- the object is achieved by a coffee machine for pre-portioned coffee units, in particular coffee capsules, with a brewing unit according to one of the embodiments described above.
- the above-mentioned object is achieved by a method for operating a brewing unit for a beverage preparation device for substrate portions, in particular for a coffee machine for pre-portioned coffee units, with a carrier and a brewing chamber, the at least two brewing chamber halves of which are preferably moved between an open position and a closed position via mechanical drive means, wherein after a substrate portion has been picked up in the open position and the brewing chamber halves have been transferred to the closed position by means of, preferably mechanical, drive means, the brewing chamber halves are brought into contact with one another on contact surfaces of the respective brewing chamber halves force is applied to one another by a hydraulic sealing cylinder arranged in at least one half of the brewing chamber ng or contact pressure of the contact surfaces of the brewing chamber halves and the sealing cylinder is supplied with brewing fluid from a brewing fluid inflow of the brewing chamber half, with the brewing fluid being injected into the substrate portion via an infusion assembly preferably movably mounted in the brewing chamber half when a brewing pressure
- the method according to the invention enables that the halves of the brewing chamber of the brewing unit can be closed almost effortlessly via the drive means and can be held in the closed position without permanent high mechanical pressure or contact pressure on one another and only before and during the brewing process does the brewing fluid itself ensure that there is sufficient contact pressure and thus a sufficient sealing effect on the Contact surfaces of the brewing chamber halves is reached.
- the pressure in the sealing cylinder increases in proportion to, preferably equal to, a pressure in a hydraulic cylinder connected to the sealing cylinder in a fluid-conducting manner, the piston of which transfers infusion agent of an infusion assembly from a withdrawn position to a brewing position.
- the pressure in the sealing cylinder and/or hydraulic cylinder is kept essentially constant during the entire brewing process.
- the pressure in the sealing cylinder and/or hydraulic cylinder is controlled by an automatic, in particular automatic valve, in particular a counter-pressure valve, which preferably controls the fluid flow between the hydraulic cylinder and the infusion assembly.
- the hydraulic cylinder and the sealing cylinder are simply connected to one another in a fluid-conducting manner via an unregulated opening or an unregulated connection or communicate with one another in a fluid-conducting manner, and as a result only a single valve that is also automatic or automatically controlled is required in order to preferably or advantageous to control not only the contact pressure on the contact surfaces of the brewing chamber halves, but also the movement of the infusion medium.
- FIG. 1 shows a section through a brewing unit according to the invention in the closed position of the brewing chamber halves and a retracted position of the infusion means;
- the brewing unit has two brewing chamber halves 02, 03.
- the brewing chamber half 03 is designed to be movable relative to a carrier 04 .
- the brewing chamber half 03 comprises an outer housing 05, an inner housing 06, and an infusion assembly 07 that is movably mounted in the inner housing , in order to form a brewing chamber 11 between the brewing chamber halves 02, 03 in a closed position of the brewing chamber halves 02, 03.
- the contact surface 10 is at least partially provided by sealing means 12 connected to the brewing chamber half 02.
- FIG. 1 shows the brewing unit 01 in a state in which the brewing chamber halves 02, 03 are closed and are therefore in a closed position.
- the closed position can preferably be brought about by mechanical drive means, which are not shown in the illustration in FIG. 1 for reasons of clarity.
- locking means can be provided which fix the brewing chamber half 03, preferably the outer housing 05, in the relative arrangement or relative position of the brewing chamber halves 02, 03 shown, or at least prevent the brewing chamber 03 from being removed or spaced apart again from the brewing chamber 02.
- a sealing cylinder 13 is formed and arranged between the outer housing 05 and the inner housing 06, which is fluidly connected to a brewing fluid inflow 14 of the brewing chamber half 03.
- the sealing cylinder 13 is formed by a base 15 of the outer housing 05, a base 16 of the inner housing 06, a radial expansion 17 or a radial extension of the inner housing 06, and a dynamic sealant 18, which is designed such that pressure in the sealing cylinder 13 causes the Sealant 18 is subjected to a force in a sealing position.
- a pressurized brewing fluid which reaches the sealing cylinder 13 via the brewing fluid inflow 14 also ensures that a force in the direction of the brewing chamber half 02 is applied to the inner housing 06, in particular to the floor 16 and the expansion 17 of the inner housing. Since the contact surface 09 of the brewing chamber unit 03 is formed by an end or end section 08 of the inner housing 06, the force that is created or built up by the pressure inside the sealing cylinder 13 is also transmitted to the contact surface 09, so that it presses against the opposite contact surface 10 of the Brewing chamber half 02 is pressed.
- the brewing chamber halves 02, 03 and their contact surfaces 09, 10 are particularly advantageously sealed in the run-up to and during a brewing process and thus precisely in the period before and while a corresponding overpressure, in particular brewing pressure, builds up and sets in the brewing chamber 11 or the sealing of the brewing chamber halves 02, 03 is subjected to a force towards one another or pressed against one another in a manner that supports it.
- an unregulated flow opening 19 is arranged in the bottom 16 of the inner housing 06 and is in fluid connection with the sealing cylinder 13 and thus also in fluid connection with the brewing fluid inflow 14 .
- the function and advantages of this flow opening can be seen by comparing FIGS. 1 and 2.
- infusion means 20 of the infusion assembly 07 of the brewing chamber half 03 have been transferred from a withdrawn position to a brewing position.
- This is accomplished in a particularly advantageous manner via the hydraulic cylinder 21 which is connected to the sealing cylinder 13 via the flow opening 19 in a fluid-conducting manner.
- the hydraulic cylinder 21 is implemented by a rear section 22 of the inner housing 06, by the bottom 16 of the inner housing 06 and by dynamic sealing means 18.2, which in turn are non-positively connected to the rear end section 23 of the infusion assembly 07.
- the rear end section 23 of the infusion assembly 07 together with the dynamic sealing means 18.2 thus form a working piston 24 which is displaceably mounted in the hydraulic cylinder 21 and which can be moved hydraulically by filling the hydraulic cylinder 21, in particular with brewing fluid, from the retracted position of Fig. 1 to the brewing position of the Fig. 2 can be transferred.
- the brewing position can be realized by a mechanical stop 25 of the infusion assembly 07 on the inner housing 06.
- the return from the brewing position to the retracted position of the infusion means 20 can be achieved via restoring means 26 of the infusion assembly 07, in particular when the hydraulic cylinder is unloaded by reducing the internal pressure, for example by hydraulic fluid, in particular brewing fluid, flowing out without the corresponding hydraulic fluid or brewing fluid being replenished becomes.
- the deformation means 30 set back relative to the infusion means 20 may have come into contact with a substrate portion where they may have already deformed the surface or part of the surface of the substrate portion.
- brewing fluid is first introduced through the brewing fluid inflow 14 into the brewing chamber half 03 and fills the sealing cylinder 13 there.
- the brewing fluid will also flow into the hydraulic cylinder 21 unhindered or unhindered.
- the counter-pressure valve 27 at the transition between the hydraulic cylinder 21 and the infusion means 20 is opened and pressurized brewing fluid can flow through the infusion channels 28 into the infusion tips 29 and from there into a substrate portion or coffee unit reach.
- pressurized brewing fluid is advantageously pumped through the brewing fluid inflow 14, so that the pressures in the sealing cylinder 13 and the hydraulic cylinder 21 are maintained and brewing fluid can pass through the open counter-pressure valve 27 for a desired time or a desired period of time.
- the counter-pressure valve 27 thus controls both the excess pressure in the sealing cylinder 13 and the pressure in the hydraulic cylinder 21. If the inflow of pressurized brewing fluid via the brewing fluid inlet 14 is stopped and, if necessary, a drainage valve is opened, the infusion means 20 is transferred from the brewing position back to the retracted position via the restoring means 26, as a result of which remaining brewing fluid can be returned or discharged from the hydraulic cylinder 21. This also reduces the contact pressure between the contact surfaces 09, 10.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3230938A CA3230938A1 (en) | 2021-09-10 | 2022-05-10 | Brewing unit with improved sealing of the brewing chamber and method foroperating such a brewing unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021123550.2A DE102021123550A1 (de) | 2021-09-10 | 2021-09-10 | Brüheinheit mit verbesserter Abdichtung der Brühkammer und Verfahren zum Betrieb einer solchen Brüheinheit |
DE102021123550.2 | 2021-09-10 |
Publications (1)
Publication Number | Publication Date |
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WO2023036476A1 true WO2023036476A1 (de) | 2023-03-16 |
Family
ID=81975384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2022/062528 WO2023036476A1 (de) | 2021-09-10 | 2022-05-10 | Brüheinheit mit verbesserter abdichtung der brühkammer und verfahren zum betrieb einer solchen brüheinheit |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA3230938A1 (de) |
DE (1) | DE102021123550A1 (de) |
WO (1) | WO2023036476A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5302407A (en) * | 1992-03-19 | 1994-04-12 | Cosmec S.R.L. | Method and apparatus for preparing coffee beverages |
US20010011502A1 (en) * | 2000-02-07 | 2001-08-09 | Francesco Bonanno | Automatic unit for preparing espresso coffee |
EP3653087A1 (de) * | 2017-07-10 | 2020-05-20 | Guangdong Midea Consumer Electric Manufacturing Co., Ltd. | Verriegelungsbrühvorrichtung, getränkebrühvorrichtung und getränkeautomat |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2207578T3 (es) | 2000-12-29 | 2004-06-01 | Sgl Italia S.R.L. | Maquina de cafe. |
CN103565277B (zh) | 2012-07-25 | 2016-03-09 | 广东德豪润达电气股份有限公司 | 咖啡机及其工作方法 |
-
2021
- 2021-09-10 DE DE102021123550.2A patent/DE102021123550A1/de active Pending
-
2022
- 2022-05-10 WO PCT/EP2022/062528 patent/WO2023036476A1/de active Application Filing
- 2022-05-10 CA CA3230938A patent/CA3230938A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5302407A (en) * | 1992-03-19 | 1994-04-12 | Cosmec S.R.L. | Method and apparatus for preparing coffee beverages |
US20010011502A1 (en) * | 2000-02-07 | 2001-08-09 | Francesco Bonanno | Automatic unit for preparing espresso coffee |
EP3653087A1 (de) * | 2017-07-10 | 2020-05-20 | Guangdong Midea Consumer Electric Manufacturing Co., Ltd. | Verriegelungsbrühvorrichtung, getränkebrühvorrichtung und getränkeautomat |
Also Published As
Publication number | Publication date |
---|---|
CA3230938A1 (en) | 2023-03-16 |
DE102021123550A1 (de) | 2023-04-06 |
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